Published July 2019 | Version v1
Journal article Metadata-only

Extraction properties for U(VI) by the 25, 27-dihydroxy-26, 28-dimercaptoethoxy-5, 11, 17, 23-tetra-tert-butyl calix[4]arene

Creators

  • 1. University of South China, Hunan (China). Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment
  • 2. University of South China, Hunan (China). School of Public Health
  • 3. Zhengan County Agriculture Bureau, Guizhou (China)
  • 4. University of South China, Hunan (China). School of Chemistry and Chemical Engineering
  • 5. University of South China, Hunan (China). School of Resource Environment and Safety Engineering
  • 6. Northern Arizona University, Flagstaff, AZ (United States). Department of Civil Engineering, Construction Management, and Environmental Engineering

Description

The p-tert-butyl calix[4]arene thiophenol derivative was successfully synthesized with reflux condition and was characterized by FT-IR and 1H-NMR. This work mainly adopted the method of controlling variables. The results showed that the optimum pH value, temperature and extraction time were respectively 4.5, 25 °C and 90 min. By calculating the data of the enthalpy change and gibbs free energy, indicating that the process of reaction was an exothermic and spontaneous process, and it demonstrated a close agreement with pseudo-second-order kinetic model. It is also found that the coexisting cations on the extraction of uranium had greater influence. (author)

Additional details

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
321
Journal Issue
1
Journal Page Range
p. 49-55
ISSN
0236-5731
CODEN
JRNCDM

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
50058802
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ENTHALPY; EXTRACTION; FOURIER TRANSFORM SPECTROMETERS; FREE ENTHALPY; NMR IMAGING; PH VALUE; URANIUM
Descriptors DEC
ACTINIDES; DIAGNOSTIC TECHNIQUES; ELEMENTS; ENERGY; MEASURING INSTRUMENTS; METALS; PHYSICAL PROPERTIES; SEPARATION PROCESSES; SPECTROMETERS; THERMODYNAMIC PROPERTIES

Optional Information

Notes
35 refs.